Motorola Mobility LLC

Google Inc.

Andrew Peter Pavacic

Armin Werner Klomsdorf

Gregory Redmond Black

Dale Gerard Schwent

Jose M Gonzalez

Alejandro Candal

A method, communication device, and computer program product mitigate Specific Absorption Rating (SAR) exposure to a user proximate to a communication device. The method includes an on-device measurement receiver of a communication device detecting a first signal level corresponding to power delivered to a first antenna. The method includes a controller determining a first return loss value based on a first transmit power setting and the first signal level. The method includes the controller determining whether the first return loss value differs from a baseline value by a threshold amount. In response to the controller determining that the first return loss value differs by the threshold amount, the controller causes the communication device to reduce the power delivered to the first antenna.

Proximal user detection with measurement receiver

A method, communication device, and computer program product mitigates Specific Absorption Rating (SAR) exposure to a user who is proximate to a communication device. The method includes an on-device measurement receiver of the communication device detecting a first signal corresponding to transmit signals that are reflected by a first antenna. The method includes a controller determining, based on the first signal a first set of values for a power efficiency parameter. The method includes the controller determining whether both the first value and the second value differ from respective baseline values by respective Specific Absorption Rate (SAR) threshold amounts. In response to the controller determining that both the first and second values differ by the respective SAR threshold amounts, the controller adjusts the power delivered to the first antenna.

Proximal user detection with a complex measurement receiver

Systems and methods are provided for wireless communication circuitry () that includes (1) a first antenna matching circuit () configured to tune a first antenna () to a first subset of a plurality of frequency bands or a second subset of the frequency bands, and including a first switch () with selectable states corresponding to the first and second subsets; (2) a second antenna matching circuit () configured to tune a second antenna () to a third subset of the frequency bands or a fourth subset of the frequency bands, and including a second switch () with selectable states corresponding to the third and fourth subsets; and (3) a third antenna matching circuit () configured to tune a third antenna () to a fifth subset of the frequency bands. The circuitry is operable with a plurality of service providers associated with the fifth subset and one of the other subsets.

Systems and methods for a universal antenna module

A method, communication device, and computer program product mitigates Specific Absorption Rating (SAR) exposure to a user who is proximate to a communication device. The method includes an on-device measurement receiver of a communication device detecting a first complex reflected signal corresponding to transmit signals that are reflected by a first antenna. The method includes a controller determining a pair of first complex return loss values based on a first complex transmit power signal and the first complex reflected signal. The method includes the controller determining whether both the first complex return loss values differ from respective baseline values by respective Specific Absorption Rate (SAR) threshold amounts. In response to the controller determining that both the first complex return loss values differ by the respective SAR threshold amounts, the controller reduces an output power level of a transceiver that delivers power to the first antenna.

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Mundelein, IL, United States of America

Andrew Peter Pavacic